Public Safety

About Pima County

Alamo Wash Floodplain Revision

FEMA Floodplain Map Revision

The Alamo Wash Study revealed portions of the Alamo Wash, the Van Buren Wash and the Sahuara Wash floodplain limits as shown on the Flood Insurance Rate Maps (FIRMs) are outdated. The Pima County Regional Flood Control District submitted a Letter of Map Revision (LOMR) application to the Federal Emergency Management Agency (FEMA) to modify the floodplain boundaries. Click in the map boundary boxes in the image below to compare the exiting FIRM flood hazard boundaries to the proposed boundaries submitted with the LOMR. See this brochure for more information on LOMRs.